Note: 1. Container to prevent collisions and beaten during usage to avoid damage the high vacuum tank. 2. Prohibit the use of a storage tank transport cans made using liquid nitrogen For transportation, please use the transport type liquid nitrogen tank. 3. Prohibit the use of sealed plug Guankou closed to avoid the formation of nitrogen to evaporate the liquid nitrogen, the pressure increased accidents 4. Liquid nitrogen tank containing liquid nitrogen only, not filling liquid air and liquid oxygen, and the container so that they produce violent combustion effect of certain substances